@http://www.nottingham.ac.uk/pic84/pic84.html

@http://www.microchip.com/1010/pline/picmicro/category/digictrl/8kbytes/devices/16f84a/index.htm
@http://www.interq.or.jp/japan/se-inoue/e_pic2.htm
@http://www.electro-tech-online.com/viewforum.php?f=11

Yichi look at this one:
@http://www.pic-tools.com/kit_edukit84.htm